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  <title>返回字符串的字符数统计</title>
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  <div id="layout-content"><div id="function.iconv-strlen" class="refentry">
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  <h1 class="refname">iconv_strlen</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">iconv_strlen</span> &mdash; <span class="dc-title">返回字符串的字符数统计</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.iconv-strlen-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>iconv_strlen</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$str</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$charset</code><span class="initializer"> = ini_get(&quot;iconv.internal_encoding&quot;)</span></span>): <span class="type">int</span></div>

  <p class="para rdfs-comment">
   和 <span class="function"><a href="function.strlen.html" class="function">strlen()</a></span> 不同的是，<span class="function"><strong>iconv_strlen()</strong></span> 统计了给定的字节序列 <code class="parameter">str</code> 中出现字符数的统计，基于指定的字符集，其产生的结果不一定和字符字节数相等。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.iconv-strlen-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">str</code></dt>

     <dd>

      <p class="para">
       该字符串。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">charset</code></dt>

     <dd>

      <p class="para">
       如果省略了 <code class="parameter">charset</code> 参数，假设 <code class="parameter">str</code> 的编码为 <a href="iconv.configuration.html" class="link">iconv.internal_encoding</a>。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.iconv-strlen-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回 <code class="parameter">str</code> 字符数的统计，是整型。
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.iconv-strlen-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.grapheme-strlen.html" class="function" rel="rdfs-seeAlso">grapheme_strlen()</a> - Get string length in grapheme units</span></li>
    <li class="member"><span class="function"><a href="function.mb-strlen.html" class="function" rel="rdfs-seeAlso">mb_strlen()</a> - 获取字符串的长度</span></li>
    <li class="member"><span class="function"><a href="function.strlen.html" class="function" rel="rdfs-seeAlso">strlen()</a> - 获取字符串长度</span></li>
   </ul>
  </p>
 </div>


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